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dc.contributor.author
Ré, Delfina Adela
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dc.contributor.author
Dezar, Carlos Alberto Alejandro
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dc.contributor.author
Chan, Raquel Lia
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dc.contributor.author
Baldwin, Ian T.
dc.contributor.author
Bonaventure, Gustavo
dc.date.available
2019-04-11T15:50:59Z
dc.date.issued
2011-01
dc.identifier.citation
Ré, Delfina Adela; Dezar, Carlos Alberto Alejandro; Chan, Raquel Lia; Baldwin, Ian T.; Bonaventure, Gustavo; Nicotiana attenuata NaHD20 plays a role in leaf ABA accumulation during water stress, benzylacetone emission from flowers, and the timing of bolting and flower transitions; Oxford University Press; Journal of Experimental Botany; 62; 1; 1-2011; 155-166
dc.identifier.issn
0022-0957
dc.identifier.uri
http://hdl.handle.net/11336/74055
dc.description.abstract
Homeodomain-leucine zipper type I (HD-Zip I) proteins are plant-specific transcription factors associated with the regulation of growth and development in response to changes in the environment. Nicotiana attenuata NaHD20 was identified as an HD-Zip I-coding gene whose expression was induced by multiple stress-associated stimuli including drought and wounding. To study the role of NaHD20 in the integration of stress responses with changes in growth and development, its expression was silenced by virus-induced gene silencing (VIGS), and control and silenced plants were metabolically and developmentally characterized. Phytohormone profiling showed that NaHD20 plays a positive role in abscisic acid (ABA) accumulation in leaves during water stress and in the expression of some dehydration-responsive genes including ABA biosynthetic genes. Moreover, consistent with the high levels of NaHD20 expression in corollas, the emission of benzylacetone from flowers was reduced in NaHD20-silenced plants. Additionally, bolting time and the opening of the inflorescence buds was decelerated in these plants in a specific developmental stage without affecting the total number of flowers produced. Water stress potentiated these effects; however, after plants recovered from this condition, the opening of the inflorescence buds was accelerated in NaHD20-silenced plants. In summary, NaHD20 plays multiple roles in N. attenuata and among these are the coordination of responses to dehydration and its integration with changes in flower transitions.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Oxford University Press
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Aba
dc.subject
Benzylacetone
dc.subject
Corolla
dc.subject
Hd-Zip
dc.subject
Nicotiana
dc.subject.classification
Otras Ciencias Biológicas
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Nicotiana attenuata NaHD20 plays a role in leaf ABA accumulation during water stress, benzylacetone emission from flowers, and the timing of bolting and flower transitions
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-03-27T17:05:19Z
dc.journal.volume
62
dc.journal.number
1
dc.journal.pagination
155-166
dc.journal.pais
Reino Unido
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dc.journal.ciudad
Oxford
dc.description.fil
Fil: Ré, Delfina Adela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Agrobiotecnología del Litoral. Universidad Nacional del Litoral. Instituto de Agrobiotecnología del Litoral; Argentina. Instituto Max Planck Institut für Chemische Okologie; Alemania
dc.description.fil
Fil: Dezar, Carlos Alberto Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Agrobiotecnología del Litoral. Universidad Nacional del Litoral. Instituto de Agrobiotecnología del Litoral; Argentina
dc.description.fil
Fil: Chan, Raquel Lia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Agrobiotecnología del Litoral. Universidad Nacional del Litoral. Instituto de Agrobiotecnología del Litoral; Argentina
dc.description.fil
Fil: Baldwin, Ian T.. Instituto Max Planck Institut für Chemische Okologie; Alemania
dc.description.fil
Fil: Bonaventure, Gustavo. Instituto Max Planck Institut für Chemische Okologie; Alemania
dc.journal.title
Journal of Experimental Botany
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/jxb/article/62/1/155/507695
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1093/jxb/erq252
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